Tension-governor for yarn-winding apparatus.



G. STONE. TENSION eovmmon ron YARN WINDING APPARATUS.

APPLICATION FILED JUNE 21, 1906. r 1,022,979, Patented Apr. 9, 1912.

3 SHEETS-SHEET 1.

- COLUMBIA PLANOGIIAPH (10-. WASHINGTO B. C.

G. STONE.

. TENSION GOVERNOR FOR YARN WINDING APPARATUS.

APPLICATION FILED JUNE 21, 1906.

Patented Apr. 9, 1912;

3 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH co., WASNINfl'l'nN, n. c.

I IIIIIIII, 4

. G. STONE. TENSION GOVERNOR FOR YARN WINDING APPARATUS.

APPLICATION FILED JUNE 21, 1906.

l in 71/14 .lllllllllllllllllrs sums-sum s.

Patented Apr. 9, 1912.

cOLUMmA PLANOGRAPH CO.'ASIHNGTON. n, c.

UNITED STATES PATENT oEEIcE.

GEORGE STONE, OF NORTH AND'OVER, MASSACHUSETTS, ASSIG-NOR TO M. T.STEVENS, if

NATHANIEL STEVENS, S. D. STEVE-NS, AND M. T. STEVENS, JR., COMPOSING THEFIRM OF M. T. STEVENS & SONS, OF NORTH ANDOVER, MASSACHUSETTS. 1

Specification of Letters Patent.

Patented Apr. 9, 1912.

, Application filed .Tune 21, 1906. Serial No. 322,710.

ratus, of which the following is a specification.

This invention relates to the winding apparatus for receiving andwinding up yarn delivered from a yarn-dressing and drying apparatus, andhas for its object to provide an automatic speed regulator for the winding reel or drum, which will reduce the speed of the latterproportionally to the increase of diameter as the yarn is wound upthereon.

The essential features of the invention are a frictional connection inthe driving means for the winding reelor drum which is adapted to havenormally a certain amount of slip, and an actuator for diminishing thefrictional pressure and causing an increase of the slip of such means asthe diameter of the coil of yarn increases. This actuator is arranged toreceive a length or bight of the yarn being wound up so that the tensionof the yarn acts thereon in a direction tending to reduce the pressureof the frictional connection.

The invention particularly consists in an apparatus for winding the yarnwhich is delivered from a machine of the character described in thepatent granted to me July 22, 1902, No. 705,15

Of the accompanying drawings,-Figure 1 represents a diagrammaticelevationof a yarn-treating and drying apparatus similar to that in thepatent referred to, together with, the winding mechanism and thecontrivances controlled by the tension I of the yarn for varying thespeed of the winding mechanism. Fig. 2-represents an elevation of thespeed-controller, as seen from the right of Fig. 1. Fig. 3 represents asectional elevation of the controller. Figs. 4, 5 and 6 represent detailviews of the Fig. 7 represents a section of the friction means forming apart of the driving mechanism,

'withthe actuator for such means shown in of Fig. 7.

The same reference characters indicate the same parts in all thefigures.

Referring to Fig. 1, the yarn to be treated is led in. a plurality ofstrands 1 from spools 2, under a guide roll or rod 3, and between rolls4 5. The latter roll dips into a tank 6 containing a sizing or dressingcomposition, some of which adheres to the periphery of the roll and iscarried upward into contact with the yarn, being deposited on the latterandpressed into the same by the cooperation of thetwo rollers 1 and 5.After receiving the dressing, the strands of yarn pass back and forthbetween two series 7 and 8 of rolls in a drying chamber, these rollsbeing so arranged that several stretches of the yarn are exposed at onceto the action of a heated current of air. The lowermost stretch of theyarn passes over a guide roll 9, thence upward to a guide roll' 10, fromwhich it passes around a guide roll 11 form-' ing a part of theactuatoror governor for the winding mechanism, whence the yarn finallypasses through .a reed 12 to a reel or winding drum 13 upon which it iswound to make a cylindricalcoil or series ofcoils 14. The reel 13 whichmay conveniently be called a winding receiver, is given its rotarymotion directly from a pulley 15 on a shaft 16, by means of a belt 17This shaft is driven by a belt 18 through the pulleys 19 and 20 forwhich may be substituted driving wheels of any other suitable characterand shafts 21 and 22 by a belt 23 passing over a pulley 24 on the mainshaft 25. The

pulley 20 is fast upon the shaft 22, which latter drives shaft 21bymeans of gears 26 upon opposite sides of the pulley. Between the disksand the faces of the pulley are disks 30 of some frictional materialsuch as i 7 leather.

Levers 31 32 are pivoted to a yoke 33 forming part of the frame of themechanism, and hang adjacent the hubs of the respective disks to whichthey are pivotally connected by pins 34 35 on the hubs extending throughslots 36 37 in the levers. To the lower ends of these levers areconnected rods or links 38 39 extending outward toward the side frames40 41 of the mechanism through holes in which their outer ends extendand are supported and guided. The rods 38 and 39 are duplicates, andeach carries near its outer end a sleeve 42 having a stud 43 on which ismounted a roller 44. The sleeves are removable and are clamped againstshoulders on the rods by lock-nuts 45. From the foregoing it will beseen that whenever the rods 38 and 39 are moved inwardly toward eachother, the levers 31 32 are swung together, and the friction disks 28 29crowded against the opposite sides of the pulley.

The actuating means for operating the rods 38 39 or clutch actuators, asthey may be called, consists of a swinging frame having side members 4647 fixed upon a rod or rock-shaft 48 by means of set-screws 49. Each ofthe side members of the swinging frame has an upwardly-extending arm 50to which is secured a cam member 51 having an inclined face 52 adaptedto engage with one of the rolls 44. The guide roll 11 for the yarnpreviously described, is mounted in the lower ends of the members 46 47.An arm 53 is fixed to the rock-shaft 48 by means of set-screws 54 andcarries on its outer end a variable weight of any suitable sort,preferably consisting of a number of weight disks 55. It is to beunderstood of course that any other form of weight may be employed or aspring may be substituted for the weight if desired. This weight is soarranged as to tend to move the arms 50 having the cams toward the leftin Fig. 1, and toward the right in Fig. 3, the cams being so arrangedthat this movement forces the rods 38 39 toward each other and clampsthe friction disks 28 29, which constitute clutch members, against thepulley 19. The yarn 1 is led over the guide roll 11 in such a directionthat a pull produced upon it by the winding drum tends to move theswinging frame in the opposite direction and lift the weight. This ofcourse has the effect of relieving the pressure exerted by the frictiondisks. I ien the yarn is slack, the weight exerts its full pressure uponthe friction clutch members so that the latter act with their maximumamount of friction, which, however, is not sufiicient to cause thepulley 19 to turn at the same speed as the shaft, it being preferable tohave always some slight amount of slip between them. As the yarn iswound up on the reel and the diameter thereof becomes greater, theperipheral speed of course increases for the same angular velocity ofthe reel, and the yarn is wound up faster than it is delivered from thespools and guide rolls 7 8. This produces an increasing tension on theyarn, which, when it becomes of sufficient amount, raises the weightedarm 53 slightly and backs off the cams 51, relieving the pressure of thefriction clutch. Thus an automatic governing is effected, the tension ofthe yarn causing the driving pulley 19 to slip just enough to drive thereel at a slowly and constantly diminishing speed so as to keep thetension of the yarn uniform and prevent its becoming stretched orbroken. A certain amount of adjustment of the friction is permittedthrough the nuts 56 57 threaded upon the rods 38 39 and binding betweenthem the cross pieces 58 which are mounted upon the ends of levers 3132. In order to prevent any uncertainty of action through springing orbending of the arms 50, each of the cam members 51 has a projecting arm59 which carries a roller 60 resting against the adjacent side member 40or 41 of the stationary frame. These rollers 60 guide the cams 51 ininvariable paths, and prevent any deflection being caused by varying resistance of the clutch members.

It is obvious that many minor variations of construction may be madewithout departing from the spirit of the invention. For example, insteadof having the clutch members and actuating parts duplicated, as is heredone, there may be only one of the movable friction disks, and for theother a fixed disk may be substituted. F urthermore, the functions ofthe shaft 21 and pulley 19 may be reversed if desired, the pulley beingthe constantly driven member, while the shaft may be connected up todrive the winding reel.

I claim:

1. In a yarn-winding apparatus, the combination with a receiver andmeans for driving the same to wind the yarn thereon, including afriction clutch, of a governor controlled by the tension of the yarn forvarying the friction power of said clutch.

in correspondence with variations in such tension; said governorcomprising a swinging frame having a guiding element about which theyarn is passed, yielding means tending to swing the frame oppositely tothe direct-ion of pull of the yarn, a cam connected with said frame, andan actuating device engaged with said cam for operation thereby andconstructed and arranged to cause increase or diminution of thefrictional grip of the clutch according as it is moved in one way or theother.

2. In combination with a yarn-winding receiver, driving means thereforincluding a shaft, a wheel loose thereon, and a friction clutch betweenthe wheel and shaft; an

actuator for the clutch having a cam surface, yielding means normallycausing said actuator to exert pressure on the clutch;

and a guide roll carried by said actuator over which a portion of theyarn passes, adapted by an increase of tension in the yarn, to diminishthe pressure exerted by said actuator.

3. In combination with a yarn-winding receiver,'driving means thereforincluding a shaft, a wheel loose thereon, and a fric-' tion clutchmember on the shaft adapted to engage the wheel; an actuator for movingthe clutch member and wheel into contact, having a projection; a movableholder having a cam surface adapted to engage said projection; yieldingmeans tending to move the holder so that its cam will cause the maximumengaging pressure of the clutch; and a yarn guide on the holder, overwhich the yarn being wound is passed, so arranged that increasingtension in the yarn will move the holder in opposition to said yieldmgmeans.

4:. In combination with a yarn-winding receiver, driving means thereforincluding a shaft, a wheel loose thereon, and a friction clutch memberon the shaft adapted to engage the wheel; an actuator for moving theclutch member and pulley into contact, having a projection; a pivotedholder having a plurality of arms on which are mounted respectively acam, a weight, and a yarn guide; the cam being adapted to engage saidclutch actuator projection, the weighted arm to swing the holder andcause the cam to connect the clutch, and the guide to receive a stretchof yarn being wound, in such manner that an increase of tension thereinmay partially overcome the pressure of the weight.

5. In combination with a yarn-winding receiver, driving means thereforincluding a shaft, a wheel loose thereon, and friction clutch memberssplined to the shaft, one on each side of the wheel; actuating devicesfor each of said clutch members; a projection on each said actuatingdevice; a swinging frame including side members, a guide roll heldbet-ween the side members, a cam on each of the side members arranged toengage the projections of said clutch-actuating devices, and a weightedarm; the weighted arm tending to swing the frame so as to move theclutch members into engagement with the wheel, and the guide roll beingarranged to receive the yarn being led to the receiver in such mannerthat the tension thereof tends to overcome the efi'ect of the weight.

6. In combination with a yarn-winding receiver, a driving shaft, adriving wheel loose thereon, a friction disk splined to the shaftmovable into engagement with the wheel, a lever engaged with the disk, arod connected with the lever and having a projection, a cam engagingsaid projection, yielding means connected with said cam tending to movethe same so as to force the disk against the wheel, and a yarn guideGEORGE STONE.

Witnesses:

HARRY R. Dow, J osnrn W. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

